Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

Find your nearest Costco warehouse location and explore helpful self-service options for customer support.

If you’re a member, enter the membership number found on your membership card. You’re now ready to start shopping! Note: Maintaining an active Costco membership doesn’t automatically …

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

To view products on Costco.com, either type what you’re looking for into the Search box, or mouse over "Shop" to view our different categories. Simply click on the name or picture of an …

Welcome to the Costco Customer Service page. Explore our many helpful self-service options and learn more about popular topics.

To search for a product online at Costco.com, enter a keyword or an item number into the search engine at the top. If the item you’re seeking is in stock and available for purchase, your search …

Please keep in mind that the Costco double guarantee applies to all membership levels. That means we guarantee both your membership and our products with a refund†, if they don’t …

How can I make changes to my account? To update your account, begin by selecting Sign In / Register in the upper right-hand corner of the Costco.com homepage. Once you are signed in, …

Order tracking is available on many Costco.com orders. If you’d like to track your order, follow these simple steps: Select Orders & Returns on the Costco.com homepage and sign in using …